Pulley construction



April 9, 1929 vw. D. HAMERSTADT v1,708,269

PULLEY CONS TRUCT ON Filed Sept. 26, 1927 2 Sheets-Sheet l PITT'. L

INVEN TOR. W/L AMM B. /rmvffsnan )Wb-)21% WW2 April 9, 1929 w. D. HAMERSTADT 1,708,269

PULLEY CONSTRUCTION MIZ/JMW@ ATTORNEY:

Patented Apr. 9, 1929.

UNITED STATES PATENT oFFlcE.

WILLIAM I). KAMER-STADT, OF INDIANAPO 1S, INEJIANA, ASQ* MANUFACTURING COMPANY, OF INDEANAPOLIS. INDIANA,

G-NOR T0 ROCKWOQD 1 CQRPORATIGN.

'.PULLEY CONSTRUCTON.

Application filed September 26, 1927.

This invention relates to a paper pulley construction.

One ObJeCt oit the invention 1s to provide an end plate and combination bushing lor paper pulleys and the like.

Another object ot' the invention is to construct a pulley wit-h a combination end plate and bushing which is adapted to serve as au anchorage for the spider arms and which spider arms are suitably secured to a hub.

One feature ot the invention consists in the formation or an end plate with a depressed portion or portions suitable tor anchorage intermediate the inner and outer ends of the plate and an inturned flange or bushing on or adjacent the inner edge of the plate.

Another feature of the invention consists in the formation of a. pulley by spot welding or otherwise welding, the spider arms to the bushing portion of a combination` end plate and bushing, and also securing by a similar manner, or otherwise, the inner ends oit said arms to a hub of cast iron or of similar suitable material.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims:

Fig. 1 is a side view of a pulley showing an end plate mounted thereon. Fig. 2 is a central section taken on line 2-2 of Fig. 1 and in the direction of the arrows. Fig. 3 is a side view of a modilied form of the invention. Fig. 4: is a side elevation of a pulley embodying the invention including the endplate and arms directly secured thereto. 5 is a central sectional view of the modification shown in Fig. 4.

In the drawings 10 indicates a conventional hub having a plurality of spider-torm ing arms 11 which are anchored by means of pins or wooden dowels 12 to the laminated paper pulley construction 13, the sheets thereof being secured in abuttable relation by being mounted on the dowels under considerable pressure. The foregoing constitutes no part of the present invention.

The annular pulley-forming periphery or rim at each side is herein shown provided with an end plate 14 which has a slightly inturned flange at its outer edge 15 and a relatively larger inturned flange or bushing' 1G at its inner edge, the saine being nestingly received by the inner wall of the annular pulley rim. The plate 14 at suitable inter- Serial No. 221,915.

driven into die dou and the head ot said nail is seatable in the counte-. nl or :iperture recess.

is a result ot the itoregomg construction the end .oitthe ani dar paperpulley rim is protected against mechanical wear end plate and the inner edge ot' the outer or end layer is also protected by the bushing 16. This construction also has the advair tage of a bet appearance .than heretofore has been obtainable. The end plate. as shown, has its main body portion slightly spaced from the end ot the paper pulley but bears thereon at the countersunk hole and at the outer and inner flange. lt will be noted that the end plate does not extend to the outer periphery of the pulley rim but terminates short thereof. and since the intnrned edge 15 is provided, a iii-in anchorage is obtained for the end plate and at the same time by reason of the termination short of the periphery olf the pulley full width or' belt contact is possible for Vthe pulley in operation.

In Fig. 3 modified Yt'orm of the invention is illustrated and in this torni the end plate 11L1 includes the inturned exterior iiange 115 and the inturned interior tiange 116. However, an annular' deiliressed groove 117 is positioned intermediate the inner and outer edges and bears en the dowels and the end ot the paper pulley rim. The annular portion is apertured as at 118 to receive the dowel receivable anchoring members 119.

In Figs. l and 5 a modified form of the invention is illustrated in which Q12 indicates the dowels, 213 the annular fibre board sect-ions, 215 the inturned flange bearing on the end section, said flange being the outer peripheral edge o' the end plate 214 which has an inturned bushi portion 216. The hub 9.10 has a central collar 209 and secured thereto are the spider arms 211 by the spot welding Q30 at the junction and 281. The arms extend radially outwardly and divergingly 'from each other and the outer ends 2232 lie in grooves 283 'formed in the annular pulley body portion and normally covered by t-he inturned'bushing portion 216 and the spot welding 23e unites the bushing to the arms. 1t desired each end ring may have the annuannular end portion, a metallic hub. a plural-4 ity of spider -arins extending,- radially out- Wardly therefrom toward the en'd portion,

and an annular end plate including an inturned inner edge mounted upon said annular end portion and united to the 4free endsof said spider arms for securing` the annular end portion to the hub. i

2. A device ot the character defined by claiml, characterized by said annular end plate including an annular corrugationconcentric with the inturned portion. y

3. A'device as delined by claim 1, charac,- terized by the annular end portion including a longitudinal recess at its inner edge' for receiving-the free end of Said spider arm and Said-inturned portion oit said annular en-d The nail 219 ot the; screw ends to Said hub, and an annular end plate includingan-inturned inner flange mounted upon Said annular end portion and Spot welded to the tree ends of said spider arms for securing the annular end portion to the hub.

5. In a paper pulley and the like `the comlbination of an annular end portion, an annular end plate including an in-tured outer edge for clampingly engaging` the end portion and an inner in-turned 'edge telescopingv the end portion. said end plate including' an intermediate depressed portion entendingtoward the end portion and suitablyaportar-erh and means for Securing the plate to the end por tion and'seatable in saidaperture.

In Witness whereof I have hereunto affixed my signature.

WILLIAM D. HAMERSTADT 

